Is “Penguin” a Scrabble word?
Yes
PENGUIN
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Penguin
/ˈpɛŋɡwɪn/
noun
1.Any of several flightless sea birds, of order Sphenisciformes, found in the Southern Hemisphere, marked by their usual upright stance, walking on short legs, and (generally) their stark black and white plumage.
2.An auk (sometimes especially a great auk), a bird of the Northern Hemisphere.
3.A nun (association through appearance, because of the black and white habit).